make private fields final where possible (#2028)

4 files changed, 10 insertions, 6 deletions

diff --git a/src/main/java/gregtech/api/util/GT_AssemblyLineUtils.java b/src/main/java/gregtech/api/util/GT_AssemblyLineUtils.java
index a1af512b82..077964cb69 100644
--- a/src/main/java/gregtech/api/util/GT_AssemblyLineUtils.java
+++ b/src/main/java/gregtech/api/util/GT_AssemblyLineUtils.java
@@ -28,11 +28,11 @@ public class GT_AssemblyLineUtils {
     /**
      * A cache of Recipes using the Output as Key.
      */
-    private static HashMap<GT_ItemStack, GT_Recipe_AssemblyLine> sRecipeCacheByOutput = new HashMap<>();
+    private static final HashMap<GT_ItemStack, GT_Recipe_AssemblyLine> sRecipeCacheByOutput = new HashMap<>();
     /**
      * A cache of Recipes using the Recipe Hash String as Key.
      */
-    private static HashMap<String, GT_Recipe_AssemblyLine> sRecipeCacheByRecipeHash = new HashMap<>();
+    private static final HashMap<String, GT_Recipe_AssemblyLine> sRecipeCacheByRecipeHash = new HashMap<>();
 
     /**
      * Checks the DataStick for deprecated/invalid recipes, updating them as required.
diff --git a/src/main/java/gregtech/api/util/GT_BaseCrop.java b/src/main/java/gregtech/api/util/GT_BaseCrop.java
index 912a966e35..456ba50ff1 100644
--- a/src/main/java/gregtech/api/util/GT_BaseCrop.java
+++ b/src/main/java/gregtech/api/util/GT_BaseCrop.java
@@ -36,8 +36,8 @@ public class GT_BaseCrop extends CropCard implements ICropCardInfo {
     private int mMaxSize = 0;
     private int mAfterHarvestSize = 0;
     private int mHarvestSize = 0;
-    private int[] mStats = new int[5];
-    private int mGrowthSpeed = 0;
+    private final int[] mStats = new int[5];
+    private final int mGrowthSpeed = 0;
     private ItemStack mDrop = null;
     private ItemStack[] mSpecialDrops = null;
     private Materials mBlock = null;
diff --git a/src/main/java/gregtech/api/util/GT_ItsNotMyFaultException.java b/src/main/java/gregtech/api/util/GT_ItsNotMyFaultException.java
index d6b41e69b0..f47a356d7b 100644
--- a/src/main/java/gregtech/api/util/GT_ItsNotMyFaultException.java
+++ b/src/main/java/gregtech/api/util/GT_ItsNotMyFaultException.java
@@ -4,7 +4,7 @@ public class GT_ItsNotMyFaultException extends RuntimeException {
 
     private static final long serialVersionUID = -8752778866486460495L;
 
-    private String mError;
+    private final String mError;
 
     public GT_ItsNotMyFaultException(String aError) {
         mError = aError;
diff --git a/src/main/java/gregtech/api/util/GT_Recipe.java b/src/main/java/gregtech/api/util/GT_Recipe.java
index 4aa6d68a0a..2b7f0ec5b9 100644
--- a/src/main/java/gregtech/api/util/GT_Recipe.java
+++ b/src/main/java/gregtech/api/util/GT_Recipe.java
@@ -3160,7 +3160,11 @@ public class GT_Recipe implements Comparable<GT_Recipe> {
         private int neiTextColorOverride = -1;
 
         private INEISpecialInfoFormatter neiSpecialInfoFormatter;
-        private boolean checkForCollision = true, allowNoInput, allowNoInputFluid, allowNoOutput, allowNoOutputFluid;
+        private final boolean checkForCollision = true;
+        private boolean allowNoInput;
+        private boolean allowNoInputFluid;
+        private boolean allowNoOutput;
+        private boolean allowNoOutputFluid;
         private boolean disableOptimize = false;
         private Function<? super GT_RecipeBuilder, ? extends Iterable<? extends GT_Recipe>> recipeEmitter = this::defaultBuildRecipe;
         private Function<? super GT_Recipe, ? extends GT_Recipe> specialHandler;